Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The performance of several different density functional theory (DFT) methods, including GGA, hybrid-GGA, meta-GGA, and hybrid-meta-GGA methods, have been assessed in terms of their ability to accurately compute both heats of formation and ionization potentials of systems containing third row transition metals. Two dif…
Dynamic compression/shear experiments on a borosilicate glass at an average strain rate of 250 s −1 are conducted using a modified version of a split Hopkinson pressure bar. Instead of applying confining pressure, cuboid specimens with the material axis inclining to the loading direction at different angles (0°, 3°, 5…
The ferroelectric phase transition behavior in BaTiO 3 was investigated for various annealing times, temperatures, and Ba/Ti ratios by means of a differential scanning calorimeter. Coupling these observations with powder X‐ray diffraction and transmission electron microscopy allowed new insights into the barium oxide…
Density functional theory is used to examine binding energies and the most stable sites of atomic oxygen adsorbed on Pt(111) and Pt(100) surfaces as a function of surface coverage, as well as to evaluate the absorption energies and the energetically most favorable sites of atomic oxygen located in the subsurface, as a…
Water-insoluble polysaccharide (TM3a), extracted from sclerotia of Pleurotus tuber-regium, was identified as a hyperbranched beta-d-glucan from the results of one- and two-dimensional NMR and GC-MS analysis. The degree of branching of TM3a is 65.5%. TM3a was fractionated by using a non-solvent addition method into 14…
The aim of the paper is to investigate the structure of solutions of microcrystalline cellulose in NaOH/water mixtures and to determine the limit of cellulose solubility. The binary NaOH/water and the ternary cellulose/NaOH/water phase diagrams in the area of cellulose dissolution (7-10% NaOH below 0 degrees C) are st…
We report measurements of the de Haas-van Alphen effect in CeIn3 in magnetic fields extending to ~90 T, well above the Ne'el critical field of Hc ~61 T. The unreconstructed Fermi surface a-sheet is observed in the high magnetic field polarized paramagnetic limit, but with its effective mass and Fermi surface volume st…
We report first principles ab initio density functional calculations of hydrogen dynam- ics in hydrogenated amorphous silicon. Thermal motion of the host Si atoms drives H diffusion, as we demonstrate by direct simulation and explain with simple models. Si-Si bond centers and Si ring centers are local energy minima as…
Comunidades de diatomeas epiplicas de las lagunas de alta monta a de Sierra Nevada (Granada, Espa a) Se aborda el estudio de las diatomeas epiplicas que se desarrollan en la mayora de las lagunas de alta montaa del Parque Nacional de Sierra Nevada. El catlogo florstico de las diatomeas epiplicas de Sierra Nevada conti…
This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if…
Equal-channel angular pressing (ECAP) is an efficient method of improving strength of metallic alloys through (sub) grain refinement to, typically, the sub-micrometer level by introducing intensive plastic strain into materials through repetitive pressing. In the present study, the post-ECAP aging effect on strength o…
In recent years, we have reported uncooled microbolometer with amorphous vanadium-tungsten oxide as a thermometric material. The reported tungsten-doped vanadium oxide showed very high TCR over -3.0%/K compared with common vanadium oxide, which generally has the TCR values near -2.0%/K. In this work, we characterized…
The lattice parameters of Cs 2 NaHoCl 6 at 25 K, 120 K, and 294 K determined in this work are 10.6389(3) Å, 10.6666(2) Å, and 10.7220(2) Å, respectively, and those of Cs 2 NaYCl 6 at 120 K and 294 K are 10.6722(2) Å and 10.7275(2) Å, respectively, by Rietveld refinement using space group Fm -3 m . The variation in str…
El objetivo de esta investigación es analizar la composición y abundancia de las algas en transporte y su relación con variables ambientales y microbiol'ogicas en la zona de llanura aluvial ancha de la cuenca del río Cuarto. Se consideraron cinco períodos de muestreo: primavera 1999, verano 2000, otoño 2000, invierno…
In order to run a peracid oxidation on multikilogram scale in a pilot plant facility with an acceptable level of risk, an extensive study of the thermal characteristics of the reaction, reactants, and quench was undertaken. A number of features were engineered into the process in order to confidently run the process w…
High‐quality alumina ceramics were fabricated by a hot pressing with MgO and SiO 2 as additives using α‐Al 2 O 3 ‐seeded nanocrystalline γ‐Al 2 O 3 powders as the raw material. Densification behavior, microstructure evolution, and mechanical properties of alumina were investigated from 1250°C to 1450°C. The seeded γ‐A…
The temperature, current, and magnetic field dependences of the transport properties at the interface between La0.8Ca0.2MnO3 and Nb(0.1%):SrTiO3 were studied. The striking feature in the present transport data is the appearance of a charging effect that typically occurs in RC circuits. It can be well modeled by a simp…
We present a methodology for the stress–strain analysis of a film/substrate interface by combining crystallographic and continuum modelling. Starting from measurements of lattice parameters available from experimental observations, the heterostructure is recast initially in the form of a crystallographic model and fin…
Abstract The effects of elastomer type on morphology, flammability and rheological properties of high‐impact polystyrene/Mg(OH) 2 based on encapsulated by polystyrene have been investigated. The ternary composites characterized by cone calorimetry, horizontal burning rate, limiting oxygen index (LOI), rheology and SEM…
Diamond multilayer film with nanocrystalline diamond film coated on a layer of diamond nanocone film, was synthesized on silicon substrates by using in situ graphite etching in a hot filament chemical vapour deposition reactor. Many small and sharp protrusions on the surface of the multilayer film were observed using…